Portsmouth Rhode Island Weather Almanac
Wednesday, December 4, 2019
Mostly Cloudy early then Cloudy, Light Winds and Continued Cold
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2019
		December 4, 2019								Record					Record
Observed Daily Data		Observed		2018		Normal		Depart		Highest					Lowest
Maximum Temperature		39		45		46		-7		68		in	1998		20		in	1906
Minimum Temperature		28		28		32		-4		53		in	1950		5		in	1940
Average Temperature		34		37		39		-5		59		in	1998		13		in	1906
Precipitation		.00		.00		.15		-.15		2.40		in	1990
One Hour		.00		.00						.39		in	1990
Snow		0.0		0.0		0.2		-.15		3.3		in	1901
Snow Depth		3		0						4		in	1898
HDD		31		28		26		+5		52		in	1906		6		in	1998
CDD		0		0		0		+0		0		in
Maximum Dew Point		31		35		38		-7		58		in	1990		1		in	1989
Minimum Dew Point		20		13		23		-3		50		in	1950		-11		in	1989
Average  Dew Point		26		24		30		-4		54		in	1950		-5		in	1989
Maximum Humidity		87%		71%		85%		+2%		100%		in	2001		42%		in	1980
Minimum Humidity		68%		41%		54%		+14%		91%		in	1955		24%		in	2000
Average Humidity		78%		56%		69%		+8%		93%		in	1964		33%		in	1980
Maximum Barometer		29.56		30.07		30.14		-00.58		30.72		in	1966		29.56		in	2019
Minimum Barometer		29.47		29.66		29.81		-00.34		30.55		in	1966		29.01		in	1978
Average Barometer		29.52		29.87		29.98		-00.46		30.64		in	1966		29.47		in	1970
Average Wind		5.1		13.2		8.0		-2.9		19.4		in	1980		1.8		in	1994
Direction		W		NW		WNW				NW					SSW
High Wind Gust		18		32		25		-7		58		in	1900		11		in	2017
Direction		WNW		NW		WNW				E					NE
Wind Chill		20		19		23		-3							-11		in	1989
Maximum Water Temp		44.0		46.2		48.1		-4.1		52.6		in	2009		43.5		in	2000
Minimum Water Temp		40.9		43.0		45.7		-4.8		51.0		in	2009		39.4		in	2002
Average Water Temp		42.5		44.6		46.9		-4.4		51.8		in	2009		41.9		in	2002
Sunrise/ AM Twilight		6:55:57 AM						6:25:03 AM
Sunset / PM Twilight		4:15:38 PM						4:46:32 PM
Length Of Day		9:19:41
Special Conditions		None
Comments
		December 4, 2019								Record					Record
Month-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		38.3		50.5		46.5		-8.3		59.5		in	1998		29.3		in	1896
Avg Minimum Temperature		26.8		35.8		32.8		-6.0		44.8		in	1998		13.3		in	1989
Average Temperature		32.5		43.1		39.5		-7.0		52.1		in	1998		23.1		in	1896
Total Precipitation		.79		1.15		.60		+.19		3.13		in	1893		.00		in	2011
Total Snow		4.2		0.0		0.7		+3.5		4.2		in	2019		0.0		in	2018
Total HDD		128		86		101		+27		167		in	1976		50		in	1998
Total CDD		0		0		0		+0		0		in			0		in
Avg Maximum Dew Point		33.5		45.3		38.5		-5.0		51.0		in	1982		13.8		in	1976
Avg Minimum Dew Point		19.5		28.0		23.8		-4.3		39.0		in	1982		-3.8		in	1989
Average  Dew Point		26.5		36.6		31.1		-4.6		45.0		in	1982		6.0		in	1976
		December 4, 2019								Record					Record
Year-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Total Precipitation		50.29		50.38		44.45		+5.84		61.39		in	1983		24.18		in	1957
Total Snow (since Jul 1 19)		4.2		4.2		1.8		+2.4		19.5		in	1898		0.0		in	2017
Total HDD (since Jul 1 19)		1118		1146		1133		-15		1459		in	1904		862		in	2011
Total CDD (since Jan 1)		731		775		563		+168		807		in	2016		290		in	1902
Hour-by-Hour Weather For December 4, 2019
Climate Weather for December 4
Weather History For December 4
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